Throngs of firefighters stood at emotional salute Monday as they watched an ambulance carry away the body of a 30-year-old FDNY firefighter who died when he fell off a Brooklyn bridge while helping car crash victims the night before.

Steven Pollard, a probationary firefighter who came from a family of FDNY firefighters, plunged 52 feet to the concrete below the Mill Basin overpass when he responded to an overturned wreck on the westbound Belt Parkway. He went to jump over a 3-foot gap in the road to get from the eastbound to the westbound lanes to help the crash victims but slipped through, officials said.

Pollard, who was assigned to Ladder Company 170 in Brooklyn, was pronounced dead at a hospital a short time later. Hours later, hundreds of FDNY personnel and vehicles lined highways and side streets for the procession from the medical examiner's office to a funeral home. Many bowed their heads in prayer; FDNY boats also spouted huge plumes of water, some colored blue, from the river.

Pollard had been on the job for a year and a half, and just finished probation; he's the 1,151st member of the FDNY to die in the line of duty.

"It's an incredibly sad night for the Pollard family, for the Fire Department family, and for our city," FDNY Commissioner Daniel Nigro said early Monday. "He lost his life tonight in the process of helping others."

The crash victims were taken to hospitals but are expected to survive.

Pollard's captain at Ladder 170 said that in just 14 months, Pollard proved himself a great firefighter.

"Any job we gave him, he accomplished it," said Ladder 170 Capt. James Quinn. "Any job we asked him to do, he did it well."

"It's a painful day for the Pollard family. Painful day for the Canarsie family, and most of all for the fire department."

Pollard’s father, Ray, is a retired FDNY firefighter who was on the job for 31 years for Ladder Company 102 in Brooklyn. His brother, Ray Jr., is currently an FDNY firefighter and has been for 11 years for Ladder Company 114. He is also survived by his mother.

Mayor de Blasio went to the hospital after the accident.

"This is a family who has done so much for New York City and now they're going through this loss and this pain. It's a very, very tough situation," de Blasio said, adding "Think about what his mom and dad are going through right now losing their son at just 30 years old."

Pollard's captain said the department was in the process of presenting him his Ladder 170 patch.

"It was going to be on his frontpiece," he said. "He earned this patch. He passed his probation with flying colors. This patch will be on his helmet that we will present to his family at the funeral."

Two men inside one of the crashed vehicles were seriously injured, Nigro said. The road was shut down for hours following the crash, but has since reopened.